subject:(Peatlands)

Oregon State University

1. Kurnianto, Sofyan. The Eco-hydrology of Tropical Peatlands Associated with Land Cover Changes.

Degree: PhD, 2017, Oregon State University

URL: http://hdl.handle.net/1957/61900

► Tropical peatlands play an important role in global climate system by storing an immense of carbon that had been accumulated over thousands of years. Peatlands… (more)

▼ Tropical peatlands play an important role in global climate system by storing an immense of carbon that had been accumulated over thousands of years. Peatlands provide another important ecosystem service by regulating the hydrology. It is believed that peatlands act like a giant sponge by absorbing substantial amounts of water in wet season and gradually releasing the water in the following dry season. Nonetheless, there is a lack of information about the hydrological processes that occur in tropical peatlands, especially the effects of land cover change on peat and peat hydraulic properties. In this study, I conducted field surveys to evaluate two main peat hydraulic properties: saturated hydraulic conductivity (Ks) and moisture retention characteristics at different land cover types in tropical peatlands of West Kalimantan, Indonesia. I also explored the potential of ground penetrating radar (GPR) to determine peat properties in tropical peatlands. Across all sites, Ks varied over four orders of magnitude with depth (ca 0.001 – 13.9 m d-1). The saturated hydraulic conductivity in forested sites at the depth of 50-100 cm (1.08 ± 0.39 m day-1) was significantly higher than Ks at deeper layers. In addition, Ks at the upper layer of forested sites was significantly higher than Ks at the same depth in other land cover types, i.e., recently burned forests, seral community, and oil palm plantation. The best-approximating hierarchical model for estimating Ks included depth, forest cover, a depth and forest cover interaction, and the von Post degree of decomposition. There was no evidence that Ks was related to other peat physical and chemical properties. The peat moisture retention characteristics presented in the van Genuchten (VG) model indicated that bulk density was strongly and negatively related to the α parameter and there was no evidence that peat properties were strongly related to the m shape parameter of VG model. The proportion of macro-porosity in the drained sites with the distance < 50 m from canal was less than those the drained- seral sites > 50 m from canal and forested sites. Peat pore distribution (i.e., the proportion of macro-, meso- and micro-porosity) also was strongly related to bulk density. The GPR results indicated that dielectric varied from 5.8 to 84.9 across all sites and were significantly lower at the 50-100 cm depth than those measured at 300- 400 cm and 500-600 cm. Parameter estimates from hierarchical models indicated that ash content and carbon concentration were strongly positively related to dielectric and the relationship varied among sites. My results suggest that tropical peatlands provide essential environmental services by storing huge amounts of water. We estimated that the potential amount of water that can be stored by undrained peat swamp forests in Borneo, Sumatra, and Peninsular Malaysia was about 51.1 – 52.5 km3 of freshwater. However, the tropical peatlands release water relatively easily when the water table is lowered since it is mostly composed by… Advisors/Committee Members: Peterson, James T (advisor), Kauffman, John Boone (committee member).

Subjects/Keywords: tropical peatlands

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APA (6^th Edition):

Kurnianto, S. (2017). The Eco-hydrology of Tropical Peatlands Associated with Land Cover Changes. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/61900

Chicago Manual of Style (16^th Edition):

Kurnianto, Sofyan. “The Eco-hydrology of Tropical Peatlands Associated with Land Cover Changes.” 2017. Doctoral Dissertation, Oregon State University. Accessed January 26, 2021. http://hdl.handle.net/1957/61900.

MLA Handbook (7^th Edition):

Kurnianto, Sofyan. “The Eco-hydrology of Tropical Peatlands Associated with Land Cover Changes.” 2017. Web. 26 Jan 2021.

Vancouver:

Kurnianto S. The Eco-hydrology of Tropical Peatlands Associated with Land Cover Changes. [Internet] [Doctoral dissertation]. Oregon State University; 2017. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/1957/61900.

Council of Science Editors:

Kurnianto S. The Eco-hydrology of Tropical Peatlands Associated with Land Cover Changes. [Doctoral Dissertation]. Oregon State University; 2017. Available from: http://hdl.handle.net/1957/61900

University of Alberta

2. Shunina,Anna. Revegetation of Fen Peatlands Following Oil and Gas Extraction in Northern Alberta.

Degree: MS, Department of Agricultural, Food, and Nutritional Science, 2015, University of Alberta

URL: https://era.library.ualberta.ca/files/hq37vr12w

► A field experiment from 2012 to 2013 at two locations in northeastern Alberta examined the short-term success of different fen revegetation strategies following the removal… (more)

Subjects/Keywords: Peatlands; Revegetation; Fen

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APA (6^th Edition):

Shunina,Anna. (2015). Revegetation of Fen Peatlands Following Oil and Gas Extraction in Northern Alberta. (Masters Thesis). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/hq37vr12w

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Chicago Manual of Style (16^th Edition):

Shunina,Anna. “Revegetation of Fen Peatlands Following Oil and Gas Extraction in Northern Alberta.” 2015. Masters Thesis, University of Alberta. Accessed January 26, 2021. https://era.library.ualberta.ca/files/hq37vr12w.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

MLA Handbook (7^th Edition):

Shunina,Anna. “Revegetation of Fen Peatlands Following Oil and Gas Extraction in Northern Alberta.” 2015. Web. 26 Jan 2021.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Vancouver:

Shunina,Anna. Revegetation of Fen Peatlands Following Oil and Gas Extraction in Northern Alberta. [Internet] [Masters thesis]. University of Alberta; 2015. [cited 2021 Jan 26]. Available from: https://era.library.ualberta.ca/files/hq37vr12w.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Council of Science Editors:

Shunina,Anna. Revegetation of Fen Peatlands Following Oil and Gas Extraction in Northern Alberta. [Masters Thesis]. University of Alberta; 2015. Available from: https://era.library.ualberta.ca/files/hq37vr12w

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Rutgers University

3. Terry, Neil, 1985-. Biogenic gas bubble dynamics in a Northern peatland observed using electrical geophysics and other methods.

Degree: PhD, Environmental Science, 2017, Rutgers University

URL: https://rucore.libraries.rutgers.edu/rutgers-lib/52069/

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The ability of peatlands to produce, sequester, and release large volumes of greenhouse gases (particularly methane) has resulted in a large body of research dedicated… (more)

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The ability of peatlands to produce, sequester, and release large volumes of greenhouse gases (particularly methane) has resulted in a large body of research dedicated toward understanding how these soils respond to climactic variations. Yet, there still exist many uncertainties regarding variation in the mechanisms that drive the production, storage, and release of methane in peatlands, in part due to limited information at relevant spatiotemporal scales. This work harnesses the power of geophysical methods to bridge this information gap and offer new insights on the mechanics of biogenic gas dynamics in peatlands. The first portion of this work develops a methodological basis for monitoring field-scale biogenic gas variations in peatlands from electrical resistivity imaging (ERI). This approach is used to provide insight on the controlling factors that drive methane ebullition, particularly from deep peat regimes (i.e., below 1 m) that are difficult to sample with traditional methods. Using this technique, anomalous variations in resistivity are observed that correspond to decreases in atmospheric pressure and suggest that biogenic gas releases occur throughout the peat profile. Furthermore, smaller changes in resistivity seem to correspond well with expected variations in gas bubble size due to changing pressure and temperature conditions. A follow up study examines two sites in Caribou Bog, Maine in an effort to understand how peat structural and hydrogeological properties influence gas releases. This study employs a suite of direct methods (i.e., direct coring, methane flux monitoring, and gas sample collection), geochemical and environmental data, and indirect geophysical methods (ERI, ground penetrating radar, and peat deformation) to show that peat structure and underlying hydrogeology likely play a critical role in controlling methane production and release. It is observed that a highly decomposed peat site overlying an esker deposit exhibits larger methane content, larger magnitude resistivity variations (particularly in deep peat), and larger individual methane flux measurements compared to a less well decomposed peat site nearby. The concluding piece of this research develops a quantitative technique to estimate biogenic gas bubble size from frequency information derived from ground penetrating radar signals. Bubble size may be a critical parameter governing methane ebullition given the increased buoyancy and reduced oxidation potential of larger bubbles. Additionally, previous research has demonstrated a disproportionately large percentage of the total methane flux may originate from large bubbles. The approach is used to estimate bubble size variations in two laboratory studies as well as from field data, and suggests that bubbles with radii of greater than 0.04 m may exist in natural peat deposits. Employing this estimation approach in the future may help to understand the connection between bubble size, peat type/structure, and fluxes observed at the surface.

Advisors/Committee Members: Terry, Neil, 1985- (author), Slater, Lee (chair), SchÃ¤fer, Karina (internal member), Keating, Kristina (internal member), Comas, Xavier (outside member).

Subjects/Keywords: Peatlands; Greenhouse gases

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APA (6^th Edition):

Terry, Neil, 1. (2017). Biogenic gas bubble dynamics in a Northern peatland observed using electrical geophysics and other methods. (Doctoral Dissertation). Rutgers University. Retrieved from https://rucore.libraries.rutgers.edu/rutgers-lib/52069/

Chicago Manual of Style (16^th Edition):

Terry, Neil, 1985-. “Biogenic gas bubble dynamics in a Northern peatland observed using electrical geophysics and other methods.” 2017. Doctoral Dissertation, Rutgers University. Accessed January 26, 2021. https://rucore.libraries.rutgers.edu/rutgers-lib/52069/.

MLA Handbook (7^th Edition):

Terry, Neil, 1985-. “Biogenic gas bubble dynamics in a Northern peatland observed using electrical geophysics and other methods.” 2017. Web. 26 Jan 2021.

Vancouver:

Terry, Neil 1. Biogenic gas bubble dynamics in a Northern peatland observed using electrical geophysics and other methods. [Internet] [Doctoral dissertation]. Rutgers University; 2017. [cited 2021 Jan 26]. Available from: https://rucore.libraries.rutgers.edu/rutgers-lib/52069/.

Council of Science Editors:

Terry, Neil 1. Biogenic gas bubble dynamics in a Northern peatland observed using electrical geophysics and other methods. [Doctoral Dissertation]. Rutgers University; 2017. Available from: https://rucore.libraries.rutgers.edu/rutgers-lib/52069/

McMaster University

4. Furukawa, Alex. Pore-water Feedbacks and Resilience to Decay in Peat-filled Bedrock Depressions of the Canadian Shield.

Degree: MSc, 2018, McMaster University

URL: http://hdl.handle.net/11375/24086

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M.Sc Thesis

Northern peatlands are able to persist on the landscape and continue to accumulate carbon in the long-term thanks to a suite of ecohydrological… (more)

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M.Sc Thesis

Northern peatlands are able to persist on the landscape and continue to accumulate carbon in the long-term thanks to a suite of ecohydrological feedbacks that confer resilience to disturbance such as the drier and warmer conditions associated with climate change. One feedback of particular interest operates between peat pore-water residence time and chemistry, whereby changes in hydraulic structure with depth restrict turnover in deeper layers, allowing decay end-products to accumulate and thermodynamically suppress decomposition. In this way, the burial of peat facilitates its continued recalcitrance. While this feedback has been observed in more extensive northern peatlands, at least on the side of carbon dynamics and geochemistry, there has been no observational study of profiles of pore-water residence time nor has it been assessed in smaller peat-forming systems. The peat-filled bedrock depressions of the Canadian Shield offered a unique opportunity to study this feedback in systems where primary peat formation occurs under geological constraints on growth in the form of the largely impermeable bedrock. These systems play important hydrological, biogeochemical and ecological roles on the landscape. Understanding their resilience on the landscape may reveal key insights into their evolution and their response to disturbance, which is increasing in the eastern Georgian Bay region. These systems have previously exhibited a hydrological feedback between water table depth and specific yield that varies with depression size. To assess the hydraulic structure that constrains pore-water transport to support continued recalcitrance, profiles of hydrophysical properties and pore-water residence time in four deep (>0.4 m mean depth) and five intermediate (<0.4 m) depressions. Hydraulic structure varied by depression size and depth in the profile, with very low hydraulic conductivities measured in the catotelms of deep sites. The two classes of depressions exhibited distinct hydrology, in the form of dampened water table fluctuations and hydraulic gradients in the deeper sites. Stable isotope analysis of δ2H and δ18O was used to estimate relative pore-water residence times using the simplified inverse transit time proxy (ITTP) for samples collected from May-August 2017. These estimates were observed to have similar controls to hydraulic structure and a close relationship with depth-averaged conductivity on a whole-site basis. While it was hypothesized that the catotelms of deeper depressions would have less pore-water turnover than that of shallower depressions, the ITTP was only able to differentiate between catotelm-acrotelm and deep-intermediate individually. The relative residence time of pore-water in deep catotelms based on δ2H was longer than in intermediate catotelms, but not significantly. These results broadly supported previous pore-water residence time work despite the likely ubiquitous promotion of turnover in the wetter-than-average study period. Carbon accumulation was quantified from extracted…

Advisors/Committee Members: Waddington, James Michael, Geography and Earth Sciences.

Subjects/Keywords: ecohydrology; isotope hydrology; feedbacks; peatlands

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APA (6^th Edition):

Furukawa, A. (2018). Pore-water Feedbacks and Resilience to Decay in Peat-filled Bedrock Depressions of the Canadian Shield. (Masters Thesis). McMaster University. Retrieved from http://hdl.handle.net/11375/24086

Chicago Manual of Style (16^th Edition):

Furukawa, Alex. “Pore-water Feedbacks and Resilience to Decay in Peat-filled Bedrock Depressions of the Canadian Shield.” 2018. Masters Thesis, McMaster University. Accessed January 26, 2021. http://hdl.handle.net/11375/24086.

MLA Handbook (7^th Edition):

Furukawa, Alex. “Pore-water Feedbacks and Resilience to Decay in Peat-filled Bedrock Depressions of the Canadian Shield.” 2018. Web. 26 Jan 2021.

Vancouver:

Furukawa A. Pore-water Feedbacks and Resilience to Decay in Peat-filled Bedrock Depressions of the Canadian Shield. [Internet] [Masters thesis]. McMaster University; 2018. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/11375/24086.

Council of Science Editors:

Furukawa A. Pore-water Feedbacks and Resilience to Decay in Peat-filled Bedrock Depressions of the Canadian Shield. [Masters Thesis]. McMaster University; 2018. Available from: http://hdl.handle.net/11375/24086

University of Guelph

5. Merchant, Michael Allan. Examining the Influence of Subarctic Boreal Ground Condition on C-Band RADARSAT-2 POLSAR Variables for Target Separability and the Application of a Support Vector Machine.

Degree: MS, Department of Geography, 2014, University of Guelph

URL: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/8286

► Accelerated permafrost thaw is being observed in northern peatlands, with profound effects on local hydrology and ecosystem energy balances. Synthetic aperture RADAR (SAR) has shown… (more)

Subjects/Keywords: SAR; Peatlands; RADAR; Soil Moisture

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APA (6^th Edition):

Merchant, M. A. (2014). Examining the Influence of Subarctic Boreal Ground Condition on C-Band RADARSAT-2 POLSAR Variables for Target Separability and the Application of a Support Vector Machine. (Masters Thesis). University of Guelph. Retrieved from https://atrium.lib.uoguelph.ca/xmlui/handle/10214/8286

Chicago Manual of Style (16^th Edition):

Merchant, Michael Allan. “Examining the Influence of Subarctic Boreal Ground Condition on C-Band RADARSAT-2 POLSAR Variables for Target Separability and the Application of a Support Vector Machine.” 2014. Masters Thesis, University of Guelph. Accessed January 26, 2021. https://atrium.lib.uoguelph.ca/xmlui/handle/10214/8286.

MLA Handbook (7^th Edition):

Merchant, Michael Allan. “Examining the Influence of Subarctic Boreal Ground Condition on C-Band RADARSAT-2 POLSAR Variables for Target Separability and the Application of a Support Vector Machine.” 2014. Web. 26 Jan 2021.

Vancouver:

Merchant MA. Examining the Influence of Subarctic Boreal Ground Condition on C-Band RADARSAT-2 POLSAR Variables for Target Separability and the Application of a Support Vector Machine. [Internet] [Masters thesis]. University of Guelph; 2014. [cited 2021 Jan 26]. Available from: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/8286.

Council of Science Editors:

Merchant MA. Examining the Influence of Subarctic Boreal Ground Condition on C-Band RADARSAT-2 POLSAR Variables for Target Separability and the Application of a Support Vector Machine. [Masters Thesis]. University of Guelph; 2014. Available from: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/8286

University of Oregon

6. McAllister, Steven. Seasonal Dynamics of Methane Pathways Along a Hydrogeomorphic Peatland Gradient.

Degree: MS, Department of Biology, 2016, University of Oregon

URL: http://hdl.handle.net/1794/20419

► Northern peatlands occupy a very small proportion of the Earth’s surface but contain nearly a third of the world’s soil organic carbon. These wetland systems… (more)

Subjects/Keywords: Anaerobic; Carbon; Methane; Pathways; Peatlands

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APA (6^th Edition):

McAllister, S. (2016). Seasonal Dynamics of Methane Pathways Along a Hydrogeomorphic Peatland Gradient. (Masters Thesis). University of Oregon. Retrieved from http://hdl.handle.net/1794/20419

Chicago Manual of Style (16^th Edition):

McAllister, Steven. “Seasonal Dynamics of Methane Pathways Along a Hydrogeomorphic Peatland Gradient.” 2016. Masters Thesis, University of Oregon. Accessed January 26, 2021. http://hdl.handle.net/1794/20419.

MLA Handbook (7^th Edition):

McAllister, Steven. “Seasonal Dynamics of Methane Pathways Along a Hydrogeomorphic Peatland Gradient.” 2016. Web. 26 Jan 2021.

Vancouver:

McAllister S. Seasonal Dynamics of Methane Pathways Along a Hydrogeomorphic Peatland Gradient. [Internet] [Masters thesis]. University of Oregon; 2016. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/1794/20419.

Council of Science Editors:

McAllister S. Seasonal Dynamics of Methane Pathways Along a Hydrogeomorphic Peatland Gradient. [Masters Thesis]. University of Oregon; 2016. Available from: http://hdl.handle.net/1794/20419

University of Arizona

7. Anderson, Talia. Spatiotemporal Peatland Productivity and Climate Relationships Across the Western South American Altiplano .

Degree: 2020, University of Arizona

URL: http://hdl.handle.net/10150/641416

► The South American Altiplano is one of the largest, semiarid, high-altitude plateaus in the world. Within the Altiplano, peatlands locally known as ‘bofedales’ provide key… (more)

▼ The South American Altiplano is one of the largest, semiarid, high-altitude plateaus in the world. Within the Altiplano, peatlands locally known as ‘bofedales’ provide key water resources and ecosystem services to Andean communities and are important components of regional hydrology. Since bofedales are found near the upper-elevational limits for vegetation growth, they are highly sensitive to climate variability and change. Recent warming trends, changes in snow cover, and shifting atmospheric circulation patterns are among the differences that will likely affect peatland dynamics and regional hydrology. It is therefore urgent to better understand the relationships between climate variability and the spatiotemporal variations in peatland productivity across the Altiplano. Here, we use a recently developed inventory of bofedales, based on 31 years of Landsat data, to explore regional productivity patterns and climate influences on the dynamics of peatland vegetation. We focus specifically on the bofedal network in the Chilean Altiplano, the driest sector of the plateau, and use the satellite-derived NDVI (Normalized Difference Vegetation Index) as an indicator of vegetation activity. We develop temporally continuous NDVI products at the bofedal unit, 1 km2, and 5 km2 scales in order to evaluate relationships with climate variables over the past three decades. We conclude that cumulative precipitation from the current year to two years prior and snow persistence from two years prior are strongly associated growing season productivity, demonstrating the complex lagged relationships between climate and peatland productivity in the Chilean Altiplano. We also show that the recent jump in peatland productivity between 2013–2015 drives the increasing trend in NDVI and is likely a response to consecutive years of anomalously high snow accumulation and rainfall. A significant relationship between productivity and temperature does not emerge at the large-scale. Understanding the large-scale productivity dynamics and characterizing the response of bofedales to climate variability over the last three decades provides a baseline to more effectively monitor the responses of Andean peatlands to climate change. Advisors/Committee Members: Anchukaitis, Kevin J (advisor), Christie, Duncan A. (committeemember), Chávez, Roberto O. (committeemember), Evans, Tom P. (committeemember).

Subjects/Keywords: Altiplano; Andes; bofedales; NDVI; peatlands

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APA (6^th Edition):

Anderson, T. (2020). Spatiotemporal Peatland Productivity and Climate Relationships Across the Western South American Altiplano . (Masters Thesis). University of Arizona. Retrieved from http://hdl.handle.net/10150/641416

Chicago Manual of Style (16^th Edition):

Anderson, Talia. “Spatiotemporal Peatland Productivity and Climate Relationships Across the Western South American Altiplano .” 2020. Masters Thesis, University of Arizona. Accessed January 26, 2021. http://hdl.handle.net/10150/641416.

MLA Handbook (7^th Edition):

Anderson, Talia. “Spatiotemporal Peatland Productivity and Climate Relationships Across the Western South American Altiplano .” 2020. Web. 26 Jan 2021.

Vancouver:

Anderson T. Spatiotemporal Peatland Productivity and Climate Relationships Across the Western South American Altiplano . [Internet] [Masters thesis]. University of Arizona; 2020. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/10150/641416.

Council of Science Editors:

Anderson T. Spatiotemporal Peatland Productivity and Climate Relationships Across the Western South American Altiplano . [Masters Thesis]. University of Arizona; 2020. Available from: http://hdl.handle.net/10150/641416

Rutgers University

8. Yu, Zhongjie, 1986-. Dynamics of methane ebullition from a peat monolith revealed from a dynamic flux chamber system.

Degree: MS, Environmental Science, 2014, Rutgers University

URL: https://rucore.libraries.rutgers.edu/rutgers-lib/42335/

► Methane (CH4) ebullition in northern peatlands is poorly quantified in part due to its high spatiotemporal variability. In this study, we employed a continuous measurement… (more)

▼ Methane (CH4) ebullition in northern peatlands is poorly quantified in part due to its high spatiotemporal variability. In this study, we employed a continuous measurement approach to better understand the coupling between CH4 ebullition fluxes and subsurface gas bubble dynamics and to examine potential triggering effects of atmospheric pressure and temperature on ebullitive CH4 releases. A dynamic flux chamber system (DFC), consisting of a flow-through gas chamber and a fast methane analyzer (LI-COR 7700), was used to continuously measure CH4 fluxes from a monolith of near-surface Sphagnum peat over eight weeks. By using a graphical separation method, episodic ebullition fluxes were extracted from total flux recorded, and the timing and CH4 content of individual ebullition events identified. Coincident transmission ground penetrating radar (GPR) measurements of gas content and dissolved CH4 concentrations in pore water were also acquired at three depths (upper, middle, and lower) within the monolith. Estimated episodic ebullition fluxes were not sensitive to the uncertainties in steady flux quantification associated with the graphical model and the application of the DFC had minimal disturbance on air-peat CH4 exchange. Episodic and steady ebullition fluxes, constrained by modeled diffusion fluxes using Fick’s law and the bulk CH4 concentrations in peat, were estimated as on average 38% and 36% of the total fluxes over the entire study period, respectively. The observations of gas content variations within the three layers along with the timing of episodic ebullition fluxes support the existence of an ebullition threshold regulating CH4 ebullition. However, a larger threshold (gas content of 0.14 m3•m-3) was found for the middle and lower layers, suggesting that multiple mechanisms related to the depth variation of peat structure were responsible for the complex behavior of episodic CH4 ebullition. Temperature variation (23 ̊C to 27 ̊C) was likely only responsible for small episodic ebullition events from the upper peat layer, while large ebullition events from the deeper layers were most likely driven by drops in atmospheric pressure. Advisors/Committee Members: Yu, Zhongjie, 1986- (author), Slater, Lee (chair), Schafer, Karina (internal member), Reeve, Andrew (outside member).

Subjects/Keywords: Methane; Peatlands; Peatland ecology

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APA (6^th Edition):

Yu, Zhongjie, 1. (2014). Dynamics of methane ebullition from a peat monolith revealed from a dynamic flux chamber system. (Masters Thesis). Rutgers University. Retrieved from https://rucore.libraries.rutgers.edu/rutgers-lib/42335/

Chicago Manual of Style (16^th Edition):

Yu, Zhongjie, 1986-. “Dynamics of methane ebullition from a peat monolith revealed from a dynamic flux chamber system.” 2014. Masters Thesis, Rutgers University. Accessed January 26, 2021. https://rucore.libraries.rutgers.edu/rutgers-lib/42335/.

MLA Handbook (7^th Edition):

Yu, Zhongjie, 1986-. “Dynamics of methane ebullition from a peat monolith revealed from a dynamic flux chamber system.” 2014. Web. 26 Jan 2021.

Vancouver:

Yu, Zhongjie 1. Dynamics of methane ebullition from a peat monolith revealed from a dynamic flux chamber system. [Internet] [Masters thesis]. Rutgers University; 2014. [cited 2021 Jan 26]. Available from: https://rucore.libraries.rutgers.edu/rutgers-lib/42335/.

Council of Science Editors:

Yu, Zhongjie 1. Dynamics of methane ebullition from a peat monolith revealed from a dynamic flux chamber system. [Masters Thesis]. Rutgers University; 2014. Available from: https://rucore.libraries.rutgers.edu/rutgers-lib/42335/

University of Aberdeen

9. Ahmad Ramli, Mohd Faizal.; University of Aberdeen.School of Biological Sciences.; Malaysia.Kementerian Pengajian Tinggi. Phosphorus turnover and dynamics in peatland.

Degree: School of Biological Sciences., 2013, University of Aberdeen

URL: http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?application=DIGITOOL-3&owner=resourcediscovery&custom_att_2=simple_viewer&pid=195801 ; http://digitool.abdn.ac.uk:1801/webclient/DeliveryManager?pid=195801&custom_att_2=simple_viewer

Subjects/Keywords: Peatlands; Phosphorus.

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APA (6^th Edition):

Ahmad Ramli, M. F. ;. U. o. A. S. o. B. S. ;. M. K. P. T. (2013). Phosphorus turnover and dynamics in peatland. (Doctoral Dissertation). University of Aberdeen. Retrieved from http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?application=DIGITOOL-3&owner=resourcediscovery&custom_att_2=simple_viewer&pid=195801 ; http://digitool.abdn.ac.uk:1801/webclient/DeliveryManager?pid=195801&custom_att_2=simple_viewer

Chicago Manual of Style (16^th Edition):

Ahmad Ramli, Mohd Faizal ; University of Aberdeen School of Biological Sciences ; Malaysia Kementerian Pengajian Tinggi. “Phosphorus turnover and dynamics in peatland.” 2013. Doctoral Dissertation, University of Aberdeen. Accessed January 26, 2021. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?application=DIGITOOL-3&owner=resourcediscovery&custom_att_2=simple_viewer&pid=195801 ; http://digitool.abdn.ac.uk:1801/webclient/DeliveryManager?pid=195801&custom_att_2=simple_viewer.

MLA Handbook (7^th Edition):

Ahmad Ramli, Mohd Faizal ; University of Aberdeen School of Biological Sciences ; Malaysia Kementerian Pengajian Tinggi. “Phosphorus turnover and dynamics in peatland.” 2013. Web. 26 Jan 2021.

Vancouver:

Ahmad Ramli MF;UoASoBS;MKPT. Phosphorus turnover and dynamics in peatland. [Internet] [Doctoral dissertation]. University of Aberdeen; 2013. [cited 2021 Jan 26]. Available from: http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?application=DIGITOOL-3&owner=resourcediscovery&custom_att_2=simple_viewer&pid=195801 ; http://digitool.abdn.ac.uk:1801/webclient/DeliveryManager?pid=195801&custom_att_2=simple_viewer.

Council of Science Editors:

Ahmad Ramli MF;UoASoBS;MKPT. Phosphorus turnover and dynamics in peatland. [Doctoral Dissertation]. University of Aberdeen; 2013. Available from: http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?application=DIGITOOL-3&owner=resourcediscovery&custom_att_2=simple_viewer&pid=195801 ; http://digitool.abdn.ac.uk:1801/webclient/DeliveryManager?pid=195801&custom_att_2=simple_viewer

University of Limerick

10. Rigney, Caitlin. Greenhouse gas emissions from rewetted peatland forests.

Degree: 2016, University of Limerick

URL: http://hdl.handle.net/10344/5592

►

peer-reviewed

Natural peatlands are important sinks of carbon (C) and vital in the global C cycle. Despite covering just 3% of the earth’s land mass,… (more)

▼

peer-reviewed

Natural peatlands are important sinks of carbon (C) and vital in the global C cycle. Despite covering just 3% of the earth’s land mass, they store as much C as all terrestrial biomass. Drainage for forestry alters the hydrology and chemical reactions in peatlands, converting them from sinks to sources of carbon dioxide (CO2) and nitrous oxide (N2O), while reducing methane (CH4) emissions. Rewetting is considered an important tool in climate change mitigation and is utilized in addition to other management tools such as Sphagnum introduction to return the C sink function of peatlands and re- establish peat forming conditions in degraded peatlands. The first aim of this study was to investigate the controls on CO2, CH4 and N2O dynamics in two rewetted former peatland forest sites in Ireland; one blanket peatland eight years after rewetting (Pollagoona) and one raised peatland three years after rewetting (Scohaboy), produce annual greenhouse gas (GHG) balances for both peatlands and compare them with natural and forested systems. The second aim was to compare the chemical and physical properties of natural, drained and rewetted peatlands in order to assess the effect of both drainage and subsequent rewetting on peatland properties. Gas fluxes were measured using the chamber method. Micro sites comprising the dominant vegetation at the study site were established and gas balances produced for one year. Although interannual variablility influences GHG emissions from peatlands, results from this study represent fluxes in a year without extreme climatic episodes. In this study, both sites acted as CO2 and CH4 sources. Although Pollagoona was an overall CO2-C source (131.6 g CO2-C m-2 yr-1), one microsite acted as a strong C sink (-142.84 g CO2-C m-2 yr-1). Methane emissions were small, totalling 2.94 ± 1.03 g CH4-C m-2 yr-1. Molinia caerulea plots were both the greatest CO2-C (168.4 g CO2-C m-2 yr-1) and CH4-C (2.53±1.01 g CH4-C m-2 yr-1) sources. Pollagoona experienced N2O uptake (-11.78 μg m-2yr-1) due to the behaviour of one microsite during the study period Scohaboy acted as a large CO2-C (585.3 g CO2-C m-2 yr-1) source in all microsites despite re- vegetation of non- brash plots due to the availability of fresh organic matter across the site. Scohaboy was also a CH4 source emitting 3.25 ± 0.58 g CH4-C m-2 yr-1. Both CO2-C (819.31 g CO2-C m-2 yr-1) and CH4-C (4.76 ±0.98 g CH4-C m-2 yr-1) emissions were highest from the brash plots. Annual nitrous oxide losses were small over the study period (72 μg m-2yr-1). Pollagoona displays little variability in elemental composition between land use type, while significant differences were observed in C and N content between land uses in Scohaboy. Unexpectedly N content of the peat did not increase with depth in four of the six peat cores analysed and this is reflected in their C:N ratio. All cores contained both labile and recalcitrant OM. Refractory OM was found in forestry samples from both sites and Scohaboy natural. Comparisons between land use types indicate…

Advisors/Committee Members: Byrne, Kenneth A., EPA.

Subjects/Keywords: natural peatlands; greenhouse gas emissions

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APA (6^th Edition):

Rigney, C. (2016). Greenhouse gas emissions from rewetted peatland forests. (Thesis). University of Limerick. Retrieved from http://hdl.handle.net/10344/5592

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Rigney, Caitlin. “Greenhouse gas emissions from rewetted peatland forests.” 2016. Thesis, University of Limerick. Accessed January 26, 2021. http://hdl.handle.net/10344/5592.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Rigney, Caitlin. “Greenhouse gas emissions from rewetted peatland forests.” 2016. Web. 26 Jan 2021.

Vancouver:

Rigney C. Greenhouse gas emissions from rewetted peatland forests. [Internet] [Thesis]. University of Limerick; 2016. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/10344/5592.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Rigney C. Greenhouse gas emissions from rewetted peatland forests. [Thesis]. University of Limerick; 2016. Available from: http://hdl.handle.net/10344/5592

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Leicester

11. Murphy, Wayne A. Methane fluxes from Amazonian tropical peatlands.

Degree: PhD, 2020, University of Leicester

URL: https://doi.org/10.25392/leicester.data.12681806.v1 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.811508

► Tropical peatlands are one of the largest soil carbon (C) storage ecosystems in the world and are critical in regulating tropical biosphere and atmosphere CH4… (more)

Subjects/Keywords: Methane fluxes; Amazonian tropical peatlands

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APA (6^th Edition):

Murphy, W. A. (2020). Methane fluxes from Amazonian tropical peatlands. (Doctoral Dissertation). University of Leicester. Retrieved from https://doi.org/10.25392/leicester.data.12681806.v1 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.811508

Chicago Manual of Style (16^th Edition):

Murphy, Wayne A. “Methane fluxes from Amazonian tropical peatlands.” 2020. Doctoral Dissertation, University of Leicester. Accessed January 26, 2021. https://doi.org/10.25392/leicester.data.12681806.v1 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.811508.

MLA Handbook (7^th Edition):

Murphy, Wayne A. “Methane fluxes from Amazonian tropical peatlands.” 2020. Web. 26 Jan 2021.

Vancouver:

Murphy WA. Methane fluxes from Amazonian tropical peatlands. [Internet] [Doctoral dissertation]. University of Leicester; 2020. [cited 2021 Jan 26]. Available from: https://doi.org/10.25392/leicester.data.12681806.v1 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.811508.

Council of Science Editors:

Murphy WA. Methane fluxes from Amazonian tropical peatlands. [Doctoral Dissertation]. University of Leicester; 2020. Available from: https://doi.org/10.25392/leicester.data.12681806.v1 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.811508

University of Oregon

12. Brunik, Kaitlin. Understanding Anaerobic Oxidation of Methane in a Climate-Manipulated Northern Peatland.

Degree: 2017, University of Oregon

URL: http://hdl.handle.net/1794/22552

► Although peatlands cover < 3% of the Earth’s surface, they are among the most important terrestrial ecosystems partially because they are responsible for roughly 10%… (more)

▼ Although peatlands cover < 3% of the Earth’s surface, they are among the most important terrestrial ecosystems partially because they are responsible for roughly 10% of global methane (CH_4) flux. The consumption of CH_4 (methanotrophy) is an important control on wetland emissions of this greenhouse gas. Anaerobic oxidation of methane (AOM) was thought to be unimportant in peatlands; however, recent studies suggest that this process is ubiquitous in freshwater wetlands, but report a wide range of rates of AOM in peatlands. Due to the lack of understanding of the magnitude and controls over AOM, it is not currently included in Earth system models. The Spruce and Peatland Responses Under Climatic and Environmental Change (SPRUCE; http://mnspruce.ornl.gov) experiment is assessing how northern peatland ecosystems react to a changing climate with a regression-based, ecosystem-scale climate manipulation that incorporates surface and deep (up to 2 m depth) peat heating from 0 to +9 °C above ambient. Soil cores were collected throughout the 2016 growing season following 13 months of deep peat heating and 14 months of subsequent whole-ecosystem warming (surface and deep heating) at 30, 50, 75, 125, and 200 cm depths from each enclosure at the SPRUCE site. Samples were slurried with a 1:3 mixture of peat and porewater (collected from the same plot and depth) and anaerobically incubated within 1°C of in situ temperatures for approximately three weeks using a radioactive tracer method. AOM was measured by the accumulation of tritiated water over time and CH_4 production rates were determined with gas chromatography. We found that AOM was ubiquitous throughout the entire peat profile, with the highest rates occurring at the surface and then decreasing with depth. Additionally, rates of AOM were the greatest at the beginning of the incubation and decreased over time, indicating that organic or inorganic terminal electron acceptors may be driving this process in peatlands. Finally, there was suggestive evidence that temperature is positively correlated with rates of AOM. Collectively, these results suggest that AOM may be important process in northern peatlands, warranting further study and consideration in Earth system models.

Subjects/Keywords: Peatlands; Anaerobic oxidation of methane (AOM); Northern peatlands; Methane; Environmental change

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APA (6^th Edition):

Brunik, K. (2017). Understanding Anaerobic Oxidation of Methane in a Climate-Manipulated Northern Peatland. (Thesis). University of Oregon. Retrieved from http://hdl.handle.net/1794/22552

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Brunik, Kaitlin. “Understanding Anaerobic Oxidation of Methane in a Climate-Manipulated Northern Peatland.” 2017. Thesis, University of Oregon. Accessed January 26, 2021. http://hdl.handle.net/1794/22552.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Brunik, Kaitlin. “Understanding Anaerobic Oxidation of Methane in a Climate-Manipulated Northern Peatland.” 2017. Web. 26 Jan 2021.

Vancouver:

Brunik K. Understanding Anaerobic Oxidation of Methane in a Climate-Manipulated Northern Peatland. [Internet] [Thesis]. University of Oregon; 2017. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/1794/22552.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Brunik K. Understanding Anaerobic Oxidation of Methane in a Climate-Manipulated Northern Peatland. [Thesis]. University of Oregon; 2017. Available from: http://hdl.handle.net/1794/22552

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Toronto

13. Gupta, Varun. Anaerobic Oxidation of Methane in Northern Peatlands.

Degree: 2011, University of Toronto

URL: http://hdl.handle.net/1807/30618

►

Anaerobic oxidation of methane (AOM) in peatlands was investigated using 13carbon isotope tracers. Existence of AOM in marine and freshwater ecosystems is well known, but… (more)

Subjects/Keywords: Anaerobic; Methane; Oxidation; Peatlands; 0425; 0368

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APA (6^th Edition):

Gupta, V. (2011). Anaerobic Oxidation of Methane in Northern Peatlands. (Masters Thesis). University of Toronto. Retrieved from http://hdl.handle.net/1807/30618

Chicago Manual of Style (16^th Edition):

Gupta, Varun. “Anaerobic Oxidation of Methane in Northern Peatlands.” 2011. Masters Thesis, University of Toronto. Accessed January 26, 2021. http://hdl.handle.net/1807/30618.

MLA Handbook (7^th Edition):

Gupta, Varun. “Anaerobic Oxidation of Methane in Northern Peatlands.” 2011. Web. 26 Jan 2021.

Vancouver:

Gupta V. Anaerobic Oxidation of Methane in Northern Peatlands. [Internet] [Masters thesis]. University of Toronto; 2011. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/1807/30618.

Council of Science Editors:

Gupta V. Anaerobic Oxidation of Methane in Northern Peatlands. [Masters Thesis]. University of Toronto; 2011. Available from: http://hdl.handle.net/1807/30618

Oregon State University

14. Novita, Nisa. Carbon Stocks and Soil Greenhouse Gas Emissions Associated with Forest Conversion to Oil Palm Plantations in Tanjung Puting Tropical Peatlands, Indonesia.

Degree: PhD, Fisheries Science, 2016, Oregon State University

URL: http://hdl.handle.net/1957/59102

► This dissertation addresses gaps of knowledge associated with how ecosystem carbon stocks and greenhouse gas emissions are affected by land use land cover change in… (more)

▼ This dissertation addresses gaps of knowledge associated with how ecosystem carbon stocks and greenhouse gas emissions are affected by land use land cover change in tropical peatlands. This was the first study that paired peat swamp forests with oil palm plantations and analyzed site scale variation on greenhouse gas emissions. This study was conducted over 16 months (September 2012 to December 2013) at Tanjung Puting, Central Kalimantan province, Indonesia. Three main objectives of this study were: 1) to quantify the total ecosystem carbon stocks and potential carbon emissions from peat swamp forest conversion to oil palm plantations; 2) to measure annual soil emissions of CO₂, CH₄ and N₂O emissions from forests and oil palm plantations; and 3) to assess the effects of fertilizer application on nitrous oxide (N₂O), carbon dioxide (CO₂), and methane (CH₄) emissions in the immature oil palm plantations. The ecosystem carbon stock of primary peat swamp forests (1770 ± 123 Mg C/ha) was 2.3 times greater than in oil palm plantations (759 ± 36 Mg C/ha). The estimate of potential emissions from forest conversion on shallow peat in this study (3710 ± 321 Mg CO₂e/ha) was one of the highest emissions derived from land use change activity in the tropics. Most of the total carbon losses were produced from belowground carbon pool, which mainly due to the depletion of soil C pools. These findings suggest that the conversion of shallow peat swamp forest may result in emissions that are as high as those arising from conversion on deep peats. We found that the conversion of tropical peat swamp forests resulted in lower CO₂ and methane emissions but higher N₂O emissions. Soil CO₂ emissions were higher in the forests (14.9 ± 0.6 Mg C ha⁻¹ yr⁻¹) than in the oil palm plantations (12.1 ± 0.4 Mg C ha⁻¹ yr⁻¹). Methane emissions were insignificant (0.4 ± 2.0 kg C ha⁻¹ yr⁻¹) in the drained plantations and high (52.4 ± 10.6 kg C ha⁻¹ yr⁻¹) in the swamp forests. The annual N₂O emissions were negligible in the peat swamp forests (0.5 ± 0.2 kg N ha⁻¹ yr⁻¹) and were substantially higher in plantations (5.5 ± 0.8 kg N ha⁻¹ yr⁻¹). In the fertilized area, we found that N addition stimulated N₂O and CO₂ emissions, but had no significant effect on CH₄ emissions. Based on local standard fertilization practices, the mean daily N₂O and CO₂ emissions were 3.5 and 1.2 times higher in the fertilized treatment than in the control treatment. The presence of oil palm in the under canopy area significantly reduced N₂O emissions but increased CO₂ emissions following nitrogen addition. However, fertilization did not affect N₂O and CO₂ emissions at a plot level in the immature oil palm plantations. Overall, our results emphasize the high urgency to conserve remaining tropical peat swamp forests by restricting oil palm plantation expansion on peat in support of global climate change mitigation efforts. Advisors/Committee Members: Kauffman, Boone (advisor), Law, Beverly (committee member).

Subjects/Keywords: Tropical peatlands; Carbon cycle (Biogeochemistry) – Indonesia

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APA (6^th Edition):

Novita, N. (2016). Carbon Stocks and Soil Greenhouse Gas Emissions Associated with Forest Conversion to Oil Palm Plantations in Tanjung Puting Tropical Peatlands, Indonesia. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/59102

Chicago Manual of Style (16^th Edition):

Novita, Nisa. “Carbon Stocks and Soil Greenhouse Gas Emissions Associated with Forest Conversion to Oil Palm Plantations in Tanjung Puting Tropical Peatlands, Indonesia.” 2016. Doctoral Dissertation, Oregon State University. Accessed January 26, 2021. http://hdl.handle.net/1957/59102.

MLA Handbook (7^th Edition):

Novita, Nisa. “Carbon Stocks and Soil Greenhouse Gas Emissions Associated with Forest Conversion to Oil Palm Plantations in Tanjung Puting Tropical Peatlands, Indonesia.” 2016. Web. 26 Jan 2021.

Vancouver:

Novita N. Carbon Stocks and Soil Greenhouse Gas Emissions Associated with Forest Conversion to Oil Palm Plantations in Tanjung Puting Tropical Peatlands, Indonesia. [Internet] [Doctoral dissertation]. Oregon State University; 2016. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/1957/59102.

Council of Science Editors:

Novita N. Carbon Stocks and Soil Greenhouse Gas Emissions Associated with Forest Conversion to Oil Palm Plantations in Tanjung Puting Tropical Peatlands, Indonesia. [Doctoral Dissertation]. Oregon State University; 2016. Available from: http://hdl.handle.net/1957/59102

University of Waikato

15. Fritz, Christian. Surface oscillation in peatlands: How variable and important is it? .

Degree: 2006, University of Waikato

URL: http://hdl.handle.net/10289/2397

► Hydrology, particularly the water table position below the surface, is an important control on biogeochemical and ecological processes in peatlands. The position of the water… (more)

▼ Hydrology, particularly the water table position below the surface, is an important control on biogeochemical and ecological processes in peatlands. The position of the water table is a function of total storage changes, drainable porosity and peatland surface oscillation (PSO). Because the absolute level of the peat surface (ASL) oscillates in a peatland, we can assign two different water table positions: the water table depth below the surface (relative water level, RWL) and the water table position above an absolute elevation datum eg. sea level (absolute water level, AWL). A review of 37 studies that report peatland surface oscillation indicate a wide range (0.4-55 cm), which is to the same order as (or one order smaller than) water storage changes and RWL fluctuations. PSO can vary substantially across a single peatland and through time. A set of mechanisms (flotation, compression/shrinkage, gas volume changes and freezing) is hypothesised to cause ASL changes. The potential of PSO to reduce RWL fluctuations trended (mean in %) floating peatlands (63) > bogs (21), fens (18) > disturbed peatlands (10) with respect to peatland types. To investigate the spatiotemporal variability of peatland surface oscillation, AWL and ASL were monitored continuously over a one-year period (one site) and monthly (23 sites) in a warm-temperate peatland that is dominated by Empodisma minus (Restionaceae). A new measurement method was developed by pairing two water level transducers, one attached to a stable benchmark (ÆAWL) and one attached to the peat surface (ÆRWL). From August 2005 until August 2006 the ASL oscillated at one site through a range of 22 cm following AWL fluctuations (in total 47 cm). Consequently, RWL fluctuations were reduced on average to 53% of AWL fluctuations. The strong AWL-ASL relationship was linear for 15 sites with manual measurements. However, eight sites showed significantly higher rates of peatland surface oscillation during the wet season (ie. high AWLs) and thus a non-linear behaviour. Temporary flotation of upper peat layers during the wet season may have caused this non-linear behaviour. On the peatland scale AWL fluctuations (mean 40 cm among sites) were reduced by 30–50% by PSO except for three sites with shallow and dense peat at the peatland margin (7–11%). The reduction of RWL fluctuation was high compared to literature values. The spatial variability of PSO seemed to match well with vegetation patterns rather than peat thickness or bulk density. Sites with large PSO showed high cover of Empodisma minus. Surface level changes exhibited surprisingly hysteretic behaviour subsequent to raised AWLs, when the rise of ASL was delayed. This delay reversed the positive ASL-AWL relationship because the surface slowly rose even though AWL started receding. Hysteresis was more pronounced during the dry season than during the wet season. The observed hysteresis can be sufficiently simulated by a simplistic model incorporating delayed ASL fluctuations. PSO has wide implications for… Advisors/Committee Members: Campbell, David I (advisor).

Subjects/Keywords: hydrology; peatlands; peatland

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APA (6^th Edition):

Fritz, C. (2006). Surface oscillation in peatlands: How variable and important is it? . (Masters Thesis). University of Waikato. Retrieved from http://hdl.handle.net/10289/2397

Chicago Manual of Style (16^th Edition):

Fritz, Christian. “Surface oscillation in peatlands: How variable and important is it? .” 2006. Masters Thesis, University of Waikato. Accessed January 26, 2021. http://hdl.handle.net/10289/2397.

MLA Handbook (7^th Edition):

Fritz, Christian. “Surface oscillation in peatlands: How variable and important is it? .” 2006. Web. 26 Jan 2021.

Vancouver:

Fritz C. Surface oscillation in peatlands: How variable and important is it? . [Internet] [Masters thesis]. University of Waikato; 2006. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/10289/2397.

Council of Science Editors:

Fritz C. Surface oscillation in peatlands: How variable and important is it? . [Masters Thesis]. University of Waikato; 2006. Available from: http://hdl.handle.net/10289/2397

University of Guelph

16. Warren, Rebecca Kathleen. Examining the spatial distribution of soil moisture and its relationship to vegetation and permafrost dynamics in a Subarctic permafrost peatland.

Degree: MS, Department of Geography, 2015, University of Guelph

URL: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/9200

► Landscape change is occurring rapidly in the permafrost peatlands of the Canadian Subarctic due to rising mean annual air temperatures. Manuscript 1 examines the statistical… (more)

Subjects/Keywords: hydrology; soil moisture; permafrost; peatlands; evapotranspiration; subarctic

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APA (6^th Edition):

Warren, R. K. (2015). Examining the spatial distribution of soil moisture and its relationship to vegetation and permafrost dynamics in a Subarctic permafrost peatland. (Masters Thesis). University of Guelph. Retrieved from https://atrium.lib.uoguelph.ca/xmlui/handle/10214/9200

Chicago Manual of Style (16^th Edition):

Warren, Rebecca Kathleen. “Examining the spatial distribution of soil moisture and its relationship to vegetation and permafrost dynamics in a Subarctic permafrost peatland.” 2015. Masters Thesis, University of Guelph. Accessed January 26, 2021. https://atrium.lib.uoguelph.ca/xmlui/handle/10214/9200.

MLA Handbook (7^th Edition):

Warren, Rebecca Kathleen. “Examining the spatial distribution of soil moisture and its relationship to vegetation and permafrost dynamics in a Subarctic permafrost peatland.” 2015. Web. 26 Jan 2021.

Vancouver:

Warren RK. Examining the spatial distribution of soil moisture and its relationship to vegetation and permafrost dynamics in a Subarctic permafrost peatland. [Internet] [Masters thesis]. University of Guelph; 2015. [cited 2021 Jan 26]. Available from: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/9200.

Council of Science Editors:

Warren RK. Examining the spatial distribution of soil moisture and its relationship to vegetation and permafrost dynamics in a Subarctic permafrost peatland. [Masters Thesis]. University of Guelph; 2015. Available from: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/9200

17. Kohlenberg, Andrew. Wildfire in peatlands and the effect of smouldering combustion on carbon and mercury emissions.

Degree: MS, Department of Integrative Biology, 2015, University of Guelph

URL: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/8707

► Warming in the boreal forest region will increase fire size, severity, and frequency. This may result in peatlands making up a larger proportion of future… (more)

Subjects/Keywords: Peatlands; Wildfire

…across forested uplands and peatlands, the slower rate of decomposition in peatlands allows for… …Peatlands are typically classified as either fens or bogs. Bogs are ombrotrophic, meaning that… …1995; Whitehouse and Bayley, 2005]. Fens represent approximately 63% of total peatlands… …peat accumulation in peatlands Globally, peatlands cover approximately three percent of the… …approximately 550 Pg of C, is stored in high latitude peatlands [Yu et al., 2010]. Canadian…

15 more images…

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APA (6^th Edition):

Kohlenberg, A. (2015). Wildfire in peatlands and the effect of smouldering combustion on carbon and mercury emissions. (Masters Thesis). University of Guelph. Retrieved from https://atrium.lib.uoguelph.ca/xmlui/handle/10214/8707

Chicago Manual of Style (16^th Edition):

Kohlenberg, Andrew. “Wildfire in peatlands and the effect of smouldering combustion on carbon and mercury emissions.” 2015. Masters Thesis, University of Guelph. Accessed January 26, 2021. https://atrium.lib.uoguelph.ca/xmlui/handle/10214/8707.

MLA Handbook (7^th Edition):

Kohlenberg, Andrew. “Wildfire in peatlands and the effect of smouldering combustion on carbon and mercury emissions.” 2015. Web. 26 Jan 2021.

Vancouver:

Kohlenberg A. Wildfire in peatlands and the effect of smouldering combustion on carbon and mercury emissions. [Internet] [Masters thesis]. University of Guelph; 2015. [cited 2021 Jan 26]. Available from: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/8707.

Council of Science Editors:

Kohlenberg A. Wildfire in peatlands and the effect of smouldering combustion on carbon and mercury emissions. [Masters Thesis]. University of Guelph; 2015. Available from: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/8707

Florida Atlantic University

18. Bole, Troy. High Spatial Resolution Measurements Using Hydrogeophysical Methods Reveal the Presence of Hotspots forBbiogenic Gas Accumulation and Release in the Florida Everglades.

Degree: MS, 2019, Florida Atlantic University

URL: http://fau.digital.flvc.org/islandora/object/fau:41328

►

It is well known that biogenic gas emissions (mainly methane and carbon dioxide) vary both spatially and temporally in peatlands. While most studies have focused… (more)

Subjects/Keywords: Everglades (Fla. ); Biogenic gas; Peatlands; Measurement

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APA (6^th Edition):

Bole, T. (2019). High Spatial Resolution Measurements Using Hydrogeophysical Methods Reveal the Presence of Hotspots forBbiogenic Gas Accumulation and Release in the Florida Everglades. (Masters Thesis). Florida Atlantic University. Retrieved from http://fau.digital.flvc.org/islandora/object/fau:41328

Chicago Manual of Style (16^th Edition):

Bole, Troy. “High Spatial Resolution Measurements Using Hydrogeophysical Methods Reveal the Presence of Hotspots forBbiogenic Gas Accumulation and Release in the Florida Everglades.” 2019. Masters Thesis, Florida Atlantic University. Accessed January 26, 2021. http://fau.digital.flvc.org/islandora/object/fau:41328.

MLA Handbook (7^th Edition):

Bole, Troy. “High Spatial Resolution Measurements Using Hydrogeophysical Methods Reveal the Presence of Hotspots forBbiogenic Gas Accumulation and Release in the Florida Everglades.” 2019. Web. 26 Jan 2021.

Vancouver:

Bole T. High Spatial Resolution Measurements Using Hydrogeophysical Methods Reveal the Presence of Hotspots forBbiogenic Gas Accumulation and Release in the Florida Everglades. [Internet] [Masters thesis]. Florida Atlantic University; 2019. [cited 2021 Jan 26]. Available from: http://fau.digital.flvc.org/islandora/object/fau:41328.

Council of Science Editors:

Bole T. High Spatial Resolution Measurements Using Hydrogeophysical Methods Reveal the Presence of Hotspots forBbiogenic Gas Accumulation and Release in the Florida Everglades. [Masters Thesis]. Florida Atlantic University; 2019. Available from: http://fau.digital.flvc.org/islandora/object/fau:41328

University of Oregon

19. McCullough, Laura. Examining Anaerobic Oxidation of Methane in a Northern Peat Bog.

Degree: MS, Department of Biology, 2020, University of Oregon

URL: https://scholarsbank.uoregon.edu/xmlui/handle/1794/25248

► Globally, about one-third of annual methane (CH4) emissions from natural sources come from freshwater wetlands. Scientists need a strong understanding of CH4 cycling to predict… (more)

Subjects/Keywords: Anaerobic; Methane; Methods; Oxidation; Peatlands; Production

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APA (6^th Edition):

McCullough, L. (2020). Examining Anaerobic Oxidation of Methane in a Northern Peat Bog. (Masters Thesis). University of Oregon. Retrieved from https://scholarsbank.uoregon.edu/xmlui/handle/1794/25248

Chicago Manual of Style (16^th Edition):

McCullough, Laura. “Examining Anaerobic Oxidation of Methane in a Northern Peat Bog.” 2020. Masters Thesis, University of Oregon. Accessed January 26, 2021. https://scholarsbank.uoregon.edu/xmlui/handle/1794/25248.

MLA Handbook (7^th Edition):

McCullough, Laura. “Examining Anaerobic Oxidation of Methane in a Northern Peat Bog.” 2020. Web. 26 Jan 2021.

Vancouver:

McCullough L. Examining Anaerobic Oxidation of Methane in a Northern Peat Bog. [Internet] [Masters thesis]. University of Oregon; 2020. [cited 2021 Jan 26]. Available from: https://scholarsbank.uoregon.edu/xmlui/handle/1794/25248.

Council of Science Editors:

McCullough L. Examining Anaerobic Oxidation of Methane in a Northern Peat Bog. [Masters Thesis]. University of Oregon; 2020. Available from: https://scholarsbank.uoregon.edu/xmlui/handle/1794/25248

University of Western Ontario

20. Twible, Lauren E. Linking Mining Wastewater Discharge to Methylmercury Production in a Sub-Arctic Peatland.

Degree: 2017, University of Western Ontario

URL: https://ir.lib.uwo.ca/etd/4997

► It is well established that the addition of sulphate (SO42-) to peatlands increases methylmercury (MeHg) concentrations in pore waters via microbial methylation. Less information exists… (more)

Subjects/Keywords: Peatlands; Mercury; Methylmercury; Mining; Sulphate; Wasterock; Biogeochemistry

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APA (6^th Edition):

Twible, L. E. (2017). Linking Mining Wastewater Discharge to Methylmercury Production in a Sub-Arctic Peatland. (Thesis). University of Western Ontario. Retrieved from https://ir.lib.uwo.ca/etd/4997

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Twible, Lauren E. “Linking Mining Wastewater Discharge to Methylmercury Production in a Sub-Arctic Peatland.” 2017. Thesis, University of Western Ontario. Accessed January 26, 2021. https://ir.lib.uwo.ca/etd/4997.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Twible, Lauren E. “Linking Mining Wastewater Discharge to Methylmercury Production in a Sub-Arctic Peatland.” 2017. Web. 26 Jan 2021.

Vancouver:

Twible LE. Linking Mining Wastewater Discharge to Methylmercury Production in a Sub-Arctic Peatland. [Internet] [Thesis]. University of Western Ontario; 2017. [cited 2021 Jan 26]. Available from: https://ir.lib.uwo.ca/etd/4997.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Twible LE. Linking Mining Wastewater Discharge to Methylmercury Production in a Sub-Arctic Peatland. [Thesis]. University of Western Ontario; 2017. Available from: https://ir.lib.uwo.ca/etd/4997

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Aberdeen

21. Ahmad Ramli, Mohd Faizal. Phosphorus turnover and dynamics in peatland.

Degree: PhD, 2013, University of Aberdeen

URL: https://eu03.alma.exlibrisgroup.com/view/delivery/44ABE_INST/12152493910005941 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.573427

Subjects/Keywords: 570; Peatlands; Phosphorus

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APA (6^th Edition):

Ahmad Ramli, M. F. (2013). Phosphorus turnover and dynamics in peatland. (Doctoral Dissertation). University of Aberdeen. Retrieved from https://eu03.alma.exlibrisgroup.com/view/delivery/44ABE_INST/12152493910005941 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.573427

Chicago Manual of Style (16^th Edition):

Ahmad Ramli, Mohd Faizal. “Phosphorus turnover and dynamics in peatland.” 2013. Doctoral Dissertation, University of Aberdeen. Accessed January 26, 2021. https://eu03.alma.exlibrisgroup.com/view/delivery/44ABE_INST/12152493910005941 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.573427.

MLA Handbook (7^th Edition):

Ahmad Ramli, Mohd Faizal. “Phosphorus turnover and dynamics in peatland.” 2013. Web. 26 Jan 2021.

Vancouver:

Ahmad Ramli MF. Phosphorus turnover and dynamics in peatland. [Internet] [Doctoral dissertation]. University of Aberdeen; 2013. [cited 2021 Jan 26]. Available from: https://eu03.alma.exlibrisgroup.com/view/delivery/44ABE_INST/12152493910005941 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.573427.

Council of Science Editors:

Ahmad Ramli MF. Phosphorus turnover and dynamics in peatland. [Doctoral Dissertation]. University of Aberdeen; 2013. Available from: https://eu03.alma.exlibrisgroup.com/view/delivery/44ABE_INST/12152493910005941 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.573427

Michigan Technological University

22. Planas Clarke, Ana Maria. THE EFFECT OF WATER TABLE LEVELS AND SHORT-TERM DITCH RESTORATION ON MOUNTAIN PEATLAND CARBON CYCLING IN THE CORDILLERA BLANCA, PERU.

Degree: MS, College of Forest Resources and Environmental Science, 2018, Michigan Technological University

URL: https://digitalcommons.mtu.edu/etdr/614

► Tropical mountain peatlands are abundant in the Andes but are under intense grazing pressure and subject to climate change, both of which alter hydrologic… (more)

Subjects/Keywords: Andean peatlands; carbon cycling; CO2; CH4; bofedales

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APA (6^th Edition):

Planas Clarke, A. M. (2018). THE EFFECT OF WATER TABLE LEVELS AND SHORT-TERM DITCH RESTORATION ON MOUNTAIN PEATLAND CARBON CYCLING IN THE CORDILLERA BLANCA, PERU. (Masters Thesis). Michigan Technological University. Retrieved from https://digitalcommons.mtu.edu/etdr/614

Chicago Manual of Style (16^th Edition):

Planas Clarke, Ana Maria. “THE EFFECT OF WATER TABLE LEVELS AND SHORT-TERM DITCH RESTORATION ON MOUNTAIN PEATLAND CARBON CYCLING IN THE CORDILLERA BLANCA, PERU.” 2018. Masters Thesis, Michigan Technological University. Accessed January 26, 2021. https://digitalcommons.mtu.edu/etdr/614.

MLA Handbook (7^th Edition):

Planas Clarke, Ana Maria. “THE EFFECT OF WATER TABLE LEVELS AND SHORT-TERM DITCH RESTORATION ON MOUNTAIN PEATLAND CARBON CYCLING IN THE CORDILLERA BLANCA, PERU.” 2018. Web. 26 Jan 2021.

Vancouver:

Planas Clarke AM. THE EFFECT OF WATER TABLE LEVELS AND SHORT-TERM DITCH RESTORATION ON MOUNTAIN PEATLAND CARBON CYCLING IN THE CORDILLERA BLANCA, PERU. [Internet] [Masters thesis]. Michigan Technological University; 2018. [cited 2021 Jan 26]. Available from: https://digitalcommons.mtu.edu/etdr/614.

Council of Science Editors:

Planas Clarke AM. THE EFFECT OF WATER TABLE LEVELS AND SHORT-TERM DITCH RESTORATION ON MOUNTAIN PEATLAND CARBON CYCLING IN THE CORDILLERA BLANCA, PERU. [Masters Thesis]. Michigan Technological University; 2018. Available from: https://digitalcommons.mtu.edu/etdr/614

Rutgers University

23. Parsekian, Andrew D., 1983-. Geophysical estimation of free-phase gas content and distribution in peatlands.

Degree: PhD, Environmental Science, 2011, Rutgers University

URL: http://hdl.rutgers.edu/1782.1/rucore10002600001.ETD.000063309

►

Emissions of methane and carbon dioxide gases from organic soils contribute to the global carbon cycle and may influence climate change. Revealing where these gases… (more)

▼

Emissions of methane and carbon dioxide gases from organic soils contribute to the global carbon cycle and may influence climate change. Revealing where these gases accumulate in the subsurface of saturated peat soils is a critical step towards understanding carbon cycling through peatlands. This dissertation presents field and laboratory geophysical investigations of free-phase gas contained within peatlands. Ground-penetrating radar (GPR) was used to estimate the vertical distribution of free- phase gas (FPG) in sites within the Glacial Lake Agassiz Peatland, MN. Bog-crest landforms were characterized by vertical variability in FPG and accumulations up to 24% FPG within the intervals 2-4 m deep. Lawn sites show lower volumes up to 12% FPG and a more even vertical gas distribution. These results demonstrate that spatial distribution of FPG varies vertically in the peat of Glacial Lake Agassiz peatlands depending on landform type. A second study was designed to elucidate spatial variability in FPG two-dimensionally along a transect crossing a bog crest, mid-slope lawn, and fen peat landforms. Variability in gas content and distribution was observed using GPR as a function of peat landform type. Estimated gas content up to 25% was observed in landforms dominated by woody surface vegetation. In the lawn, estimated gas content was > 15%, while estimated gas contents between 0% - 7% were found in the fen. Changes in gas content of up to 20% were observed over a transition between a stand of 10 m tall trees and a fen. These results support conceptual models based on accumulation and storage of FPG. Models relating geophysical measurements to pore water content limit the accuracy of FPG estimates. To improve these models, the dielectric properties of peat samples were measured in response to changes in water content. Dielectric permittivity was measured using GPR at water contents between 0.87 and 0.95 m3 m-3 on four samples with varying levels of humification. The resulting relationships indicate that there are differences in the permittivity-water content relationships between peat samples. Behavior of parameters in the dielectric mixing model indicates that variability in dielectric relationships may be attributed to peat structure.

Advisors/Committee Members: Parsekian, Andrew D., 1983- (author), Slater, Lee D (chair), Gimenez, Daniel (internal member), Schafer, Karina VR (internal member), Comas, Xavier (outside member).

Subjects/Keywords: Peatland ecology; Gases from plants; Peatlands

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APA (6^th Edition):

Parsekian, Andrew D., 1. (2011). Geophysical estimation of free-phase gas content and distribution in peatlands. (Doctoral Dissertation). Rutgers University. Retrieved from http://hdl.rutgers.edu/1782.1/rucore10002600001.ETD.000063309

Chicago Manual of Style (16^th Edition):

Parsekian, Andrew D., 1983-. “Geophysical estimation of free-phase gas content and distribution in peatlands.” 2011. Doctoral Dissertation, Rutgers University. Accessed January 26, 2021. http://hdl.rutgers.edu/1782.1/rucore10002600001.ETD.000063309.

MLA Handbook (7^th Edition):

Parsekian, Andrew D., 1983-. “Geophysical estimation of free-phase gas content and distribution in peatlands.” 2011. Web. 26 Jan 2021.

Vancouver:

Parsekian, Andrew D. 1. Geophysical estimation of free-phase gas content and distribution in peatlands. [Internet] [Doctoral dissertation]. Rutgers University; 2011. [cited 2021 Jan 26]. Available from: http://hdl.rutgers.edu/1782.1/rucore10002600001.ETD.000063309.

Council of Science Editors:

Parsekian, Andrew D. 1. Geophysical estimation of free-phase gas content and distribution in peatlands. [Doctoral Dissertation]. Rutgers University; 2011. Available from: http://hdl.rutgers.edu/1782.1/rucore10002600001.ETD.000063309

University of Arizona

24. Nolan, Connor. Using Co-Located Lake and Bog Records to Improve Inferences on Late Quaternary Climate and Ecology .

Degree: 2019, University of Arizona

URL: http://hdl.handle.net/10150/633144

► Records of past climate and ecological dynamics from lakes and bogs provide a long-term perspective that extends the modern observational record. Many different paleoclimatic and… (more)

▼ Records of past climate and ecological dynamics from lakes and bogs provide a long-term perspective that extends the modern observational record. Many different paleoclimatic and paleoecological proxies are used to characterize patterns, processes, and impacts of past climate variability, each with unique strengths and weaknesses. Integrating data across a network of different proxies requires a detailed understanding of each individual proxy. In the eastern United States two common proxies for Holocene hydroclimate conditions are testate amoeba-based water-table depth reconstructions and sedimentary lake-level reconstructions. Testate amoebae tests are preserved in sediments and can be identified to the species level. The community composition of testate amoebae on the surface of an ombrotrophic bog is sensitive to the surface moisture of the bog. Past fluctuations in lake level can be tracked by the changing elevation of the sand-mud boundary along a transect of near-shore sediment cores. Lake-level records have been developed mainly in southern New England and in the Rocky Mountains. Bog water-table depth records have been developed mainly in Maine and the Upper Midwest. For my dissertation, I have developed two pairs of co-located lake-level and bog water-table depth records from Maine and Minnesota. Co-located records allow direct comparison of proxy records that experienced the same past climate conditions. In the first chapter, I present a new testate amoeba record from Caribou Bog and a new Bayesian transfer function model that estimates water-table depth from testate amoeba assemblages. I compare seven different methods for estimating water-table depth from testate amoebae in cross-validation and in reconstruction. In the second chapter, I present a suite of records from Caribou Bog and Giles Pond, both from south-central Maine. I validate and compare the hydrologic reconstructions from Caribou Bog and Giles Pond. Then, I leverage the strengths of each proxy reconstruction to produce an integrated record of past hydrology that captures hydroclimate variability and change from decadal to multi-millennial timescales. Finally, I use the integrated record of past hydroclimate to understand vegetation changes in a new pollen record from Caribou Bog. Holocene vegetation changes represent a complex interaction between large-scale biogeographic patterns, regional and local climate variability and change, and local ecological variability. In the final chapter, I introduce new records from Ely Lake Bog and Knuckey Lake in northeastern Minnesota. I analyze the new records in the context of mid-to-late Holocene changes in the Upper Midwest and mid-latitude North America. I find consistent sub-regional drought events over the past 2000 years and coherent multi-centennial variability in the eastern United States over the past 6,200 years. This overall combination of formal statistical modeling, detailed site-level reconstruction, and single-proxy network analyses represents ways to maximize the utility of proxy… Advisors/Committee Members: Jackson, Stephen T (advisor), Cohen, Andrew (advisor), Tierney, Jessica (committeemember), Trouet, Valerie (committeemember).

Subjects/Keywords: Lakes; Paleoclimatology; Paleoecology; Peatlands; Pollen; Testate amoeba

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APA (6^th Edition):

Nolan, C. (2019). Using Co-Located Lake and Bog Records to Improve Inferences on Late Quaternary Climate and Ecology . (Doctoral Dissertation). University of Arizona. Retrieved from http://hdl.handle.net/10150/633144

Chicago Manual of Style (16^th Edition):

Nolan, Connor. “Using Co-Located Lake and Bog Records to Improve Inferences on Late Quaternary Climate and Ecology .” 2019. Doctoral Dissertation, University of Arizona. Accessed January 26, 2021. http://hdl.handle.net/10150/633144.

MLA Handbook (7^th Edition):

Nolan, Connor. “Using Co-Located Lake and Bog Records to Improve Inferences on Late Quaternary Climate and Ecology .” 2019. Web. 26 Jan 2021.

Vancouver:

Nolan C. Using Co-Located Lake and Bog Records to Improve Inferences on Late Quaternary Climate and Ecology . [Internet] [Doctoral dissertation]. University of Arizona; 2019. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/10150/633144.

Council of Science Editors:

Nolan C. Using Co-Located Lake and Bog Records to Improve Inferences on Late Quaternary Climate and Ecology . [Doctoral Dissertation]. University of Arizona; 2019. Available from: http://hdl.handle.net/10150/633144

Latrobe University

25. Shannon, James. Vegetation patterns and dynamics in the highland peatlands of eastern Victoria, Australia.

Degree: PhD, 2011, Latrobe University

URL: http://hdl.handle.net/1959.9/533945

►

Thesis (Ph.D.) - La Trobe University, 2011

Submission note: "A thesis submitted in total fulfilment of the requirements for the degree of Doctor of Philosophy… (more)

Subjects/Keywords: Vegetation surveys – Victoria.; Peatlands – Victoria.; Plants – Victoria.

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APA (6^th Edition):

Shannon, J. (2011). Vegetation patterns and dynamics in the highland peatlands of eastern Victoria, Australia. (Doctoral Dissertation). Latrobe University. Retrieved from http://hdl.handle.net/1959.9/533945

Chicago Manual of Style (16^th Edition):

Shannon, James. “Vegetation patterns and dynamics in the highland peatlands of eastern Victoria, Australia.” 2011. Doctoral Dissertation, Latrobe University. Accessed January 26, 2021. http://hdl.handle.net/1959.9/533945.

MLA Handbook (7^th Edition):

Shannon, James. “Vegetation patterns and dynamics in the highland peatlands of eastern Victoria, Australia.” 2011. Web. 26 Jan 2021.

Vancouver:

Shannon J. Vegetation patterns and dynamics in the highland peatlands of eastern Victoria, Australia. [Internet] [Doctoral dissertation]. Latrobe University; 2011. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/1959.9/533945.

Council of Science Editors:

Shannon J. Vegetation patterns and dynamics in the highland peatlands of eastern Victoria, Australia. [Doctoral Dissertation]. Latrobe University; 2011. Available from: http://hdl.handle.net/1959.9/533945

University of Montana

26. Milbrath, Joseph Tyler. Land-cover change within the peatlands along the Rocky Mountain Front, Montana: 1937-2009.

Degree: MS, 2013, University of Montana

URL: https://scholarworks.umt.edu/etd/611

► Aerial photographs of nine peatlands along the Rocky Mountain Front, Montana, were analyzed in a GIS. The boundary of wetland extent was hand-digitized and the… (more)

Subjects/Keywords: aerial photography; beavers; climate; peatlands; remote sensing

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APA (6^th Edition):

Milbrath, J. T. (2013). Land-cover change within the peatlands along the Rocky Mountain Front, Montana: 1937-2009. (Masters Thesis). University of Montana. Retrieved from https://scholarworks.umt.edu/etd/611

Chicago Manual of Style (16^th Edition):

Milbrath, Joseph Tyler. “Land-cover change within the peatlands along the Rocky Mountain Front, Montana: 1937-2009.” 2013. Masters Thesis, University of Montana. Accessed January 26, 2021. https://scholarworks.umt.edu/etd/611.

MLA Handbook (7^th Edition):

Milbrath, Joseph Tyler. “Land-cover change within the peatlands along the Rocky Mountain Front, Montana: 1937-2009.” 2013. Web. 26 Jan 2021.

Vancouver:

Milbrath JT. Land-cover change within the peatlands along the Rocky Mountain Front, Montana: 1937-2009. [Internet] [Masters thesis]. University of Montana; 2013. [cited 2021 Jan 26]. Available from: https://scholarworks.umt.edu/etd/611.

Council of Science Editors:

Milbrath JT. Land-cover change within the peatlands along the Rocky Mountain Front, Montana: 1937-2009. [Masters Thesis]. University of Montana; 2013. Available from: https://scholarworks.umt.edu/etd/611

University of Waterloo

27. Bieniada, Aneta. Methane cycling in horticultural extracted, restored, and unrestored peatlands in central Alberta, Canada.

Degree: 2020, University of Waterloo

URL: http://hdl.handle.net/10012/15569

► Horticulture peat extraction drastically changes peatland ecosystems and their carbon and greenhouse gas balance. Comprehensive study on the combined response of methane (CH4) cycling (i.e.,… (more)

▼ Horticulture peat extraction drastically changes peatland ecosystems and their carbon and greenhouse gas balance. Comprehensive study on the combined response of methane (CH4) cycling (i.e., CH4 production, oxidation, subsurface storage and release) to peat extraction, abandonment and restoration is lacking. It is still unknown how much CH4 is released through abrupt episodic ebullition events and whether they occur at unrestored sites, and how the subsurface free-phase gas, potentially comprised up to 50 % of CH4, recovers post-extraction. To date, there are no studies on ebullition and free-phase gas development with the age of restoration. There are few studies focused on methanogenic and methanotrophic members of the microbial community, its structure, abundance, and activity in these sites. Here, I address these research gaps to better understand the role of peatland restoration in greenhouse gas balance recovery and to support informed decision making on peatland management. My objectives were to determine ebullition contribution to CH4 emission from currently extracted and unrestored sites and from sites restored at different times in the past; to quantify the subsurface free-phase gas content and dissolved CH4 concentration to determine if there is a progression in subsurface CH4 pool recovery at both restored and unrestored sites; and to identify the CH4-cycling microorganisms, their community structure, abundance, diversity, and the potential rates of CH4 production and oxidation. The outcome of the research is discussed in the context of peat physicochemical properties. The study site was located west of Edmonton, Alberta (53° 33' N, 114° 44' W) at a horticulture extraction peatland complex managed by Sun Gro Horticulture and comprised of several sites of different management stages from current extraction (the Active site), through Unrestored, to restored at different times in the past: in 1991, 2009, and 2012 (RES-1991, RES-2009, and RES-2012, respectively). A natural bog (Natural) within the complex served as a reference site. The community composition and abundance of methanogens and methanotrophs was determined with Illumina Tag 16S rRNA gene sequencing and linked to physicochemical conditions across the sites and the dominant type of peat surface cover. Potential CH4 production and oxidation rates (MP and MO, respectively) were determined in microcosms with peat collected above and below the water table at the Natural, Unrestored and RES-2009 sites. I observed more diverse and abundant CH4-cycling communities in the oldest and the youngest restored sites (RES-1991 and RES-2009), while RES-2012 showed similar microbial characteristics to that in the Unrestored and Natural sites and generally low MP and MO likely affected by peat chemistry. In conclusion, restoration promotes development of CH4-cycling microorganisms more abundant and diverse than in the Natural site, while lack of restoration leads to poorly developed community of methanogens and methanotrophs and low potential MP and MO rates. I…

Subjects/Keywords: horticultural peat extraction; restored peatlands; unrestored peatlands; methanogens; methanotrophs; CH4 fluxes; ebullition; free-phase gas; methane cycyling; Peatlands; Peatland restoration; Peatland conservation; Methane; Greenhouse gas mitigation; Alberta

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APA (6^th Edition):

Bieniada, A. (2020). Methane cycling in horticultural extracted, restored, and unrestored peatlands in central Alberta, Canada. (Thesis). University of Waterloo. Retrieved from http://hdl.handle.net/10012/15569

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Bieniada, Aneta. “Methane cycling in horticultural extracted, restored, and unrestored peatlands in central Alberta, Canada.” 2020. Thesis, University of Waterloo. Accessed January 26, 2021. http://hdl.handle.net/10012/15569.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Bieniada, Aneta. “Methane cycling in horticultural extracted, restored, and unrestored peatlands in central Alberta, Canada.” 2020. Web. 26 Jan 2021.

Vancouver:

Bieniada A. Methane cycling in horticultural extracted, restored, and unrestored peatlands in central Alberta, Canada. [Internet] [Thesis]. University of Waterloo; 2020. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/10012/15569.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Bieniada A. Methane cycling in horticultural extracted, restored, and unrestored peatlands in central Alberta, Canada. [Thesis]. University of Waterloo; 2020. Available from: http://hdl.handle.net/10012/15569

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Alberta

28. Mäkitalo, Antti. Tree growth in relation to site characteristics on selected peatland sites in central Alberta.

Degree: MS, Department of Forest Science, 1985, University of Alberta

URL: https://era.library.ualberta.ca/files/8c97ks39t

Subjects/Keywords: Peatlands – Alberta.; Trees – Growth – Alberta.

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APA (6^th Edition):

Mäkitalo, A. (1985). Tree growth in relation to site characteristics on selected peatland sites in central Alberta. (Masters Thesis). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/8c97ks39t

Chicago Manual of Style (16^th Edition):

Mäkitalo, Antti. “Tree growth in relation to site characteristics on selected peatland sites in central Alberta.” 1985. Masters Thesis, University of Alberta. Accessed January 26, 2021. https://era.library.ualberta.ca/files/8c97ks39t.

MLA Handbook (7^th Edition):

Mäkitalo, Antti. “Tree growth in relation to site characteristics on selected peatland sites in central Alberta.” 1985. Web. 26 Jan 2021.

Vancouver:

Mäkitalo A. Tree growth in relation to site characteristics on selected peatland sites in central Alberta. [Internet] [Masters thesis]. University of Alberta; 1985. [cited 2021 Jan 26]. Available from: https://era.library.ualberta.ca/files/8c97ks39t.

Council of Science Editors:

Mäkitalo A. Tree growth in relation to site characteristics on selected peatland sites in central Alberta. [Masters Thesis]. University of Alberta; 1985. Available from: https://era.library.ualberta.ca/files/8c97ks39t

Cornell University

29. Cadillo Quiroz, Hinsby. MOLECULAR ECOLOGY AND DIVERSITY OF METHANOGENIC ARCHAEA FROM NORTHERN PEATLANDS.

Degree: 2008, Cornell University

URL: http://hdl.handle.net/1813/9952

► Peatlands are abundant in northern latitudes, containing nearly 30% of total soil carbon, and represent the most important natural source of atmospheric CH4. However, the… (more)

▼ Peatlands are abundant in northern latitudes, containing nearly 30% of total soil carbon, and represent the most important natural source of atmospheric CH4. However, the methanogenic Archaea inhabiting these ecosystems have been scarcely studied. We characterized the 16S rRNA gene sequence diversity of Archaea in two NY State bogs, McLean (MB) and Chicago (CB), and in Michigan Hollow (MH), a minerotrophic fen. At all sites, we found a diverse community of mainly novel uncultivated archaeal groups. At both bogs, a group in the Methanomicrobiales we named E2 was dominant, making up 50-99% of total Archaea as indicated by terminal restriction fragment length polymorphism (T-RFLP) analysis and quantitative PCR. At MH, E1, a group related to E2, and Methanosaetaceae phylotypes were co-dominant and exhibited considerable diversity. We also examined archaeal communities in the rhizoplane of two contrasting vascular plants (Dulichium spp. and Sarracenia purpurea) in MB, and found nearly even distributions of Methanosarcinaceae, Rice cluster I and E2 phylotypes, in contrast with methanogenic communities in bulk peat. We used a methanogen-specific T-RFLP assay to direct the isolation of a novel genus in the previously-uncultured E1 group from MH fen, tentatively named. Methanosphaerula palustris strain E1-9c. Additionally, we isolated three potentially novel species in the genus Methanobacterium from other temperate and boreal peatlands. Complementarily, we assessed sequence microdiversity of the E2 group in MB and CB and observed greater microdiversity in MB compared to the more recently-formed CB. Simulations with an individual-based mathematical model indicated that the differences in the ecological development at each site may serve as a theoretical scenario to explain the microdiversity patterns. In addition, using T-RFLP analysis, we examined the methanoarchaeal community macrodiversity at 22 sites from North America and Europe. At temperate sites, an ecological pattern was suggested by the dominance of E2 in acidic bogs while E1 and Methanosaetaceae were dominant in minerotrophic fens. In more northern boreal peatlands, Methanosarcinaceae, Rice cluster-II, and Methanobacteriales represented important fractions of the community not observed in temperate sites. These observations provide an initial understanding of methanoarchaeal communities useful in predicting effects of global climate change on peatland methanogenesis.

Subjects/Keywords: Methanogens; Archaeal diversity; Peatlands

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APA (6^th Edition):

Cadillo Quiroz, H. (2008). MOLECULAR ECOLOGY AND DIVERSITY OF METHANOGENIC ARCHAEA FROM NORTHERN PEATLANDS. (Thesis). Cornell University. Retrieved from http://hdl.handle.net/1813/9952

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Cadillo Quiroz, Hinsby. “MOLECULAR ECOLOGY AND DIVERSITY OF METHANOGENIC ARCHAEA FROM NORTHERN PEATLANDS.” 2008. Thesis, Cornell University. Accessed January 26, 2021. http://hdl.handle.net/1813/9952.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Cadillo Quiroz, Hinsby. “MOLECULAR ECOLOGY AND DIVERSITY OF METHANOGENIC ARCHAEA FROM NORTHERN PEATLANDS.” 2008. Web. 26 Jan 2021.

Vancouver:

Cadillo Quiroz H. MOLECULAR ECOLOGY AND DIVERSITY OF METHANOGENIC ARCHAEA FROM NORTHERN PEATLANDS. [Internet] [Thesis]. Cornell University; 2008. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/1813/9952.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Cadillo Quiroz H. MOLECULAR ECOLOGY AND DIVERSITY OF METHANOGENIC ARCHAEA FROM NORTHERN PEATLANDS. [Thesis]. Cornell University; 2008. Available from: http://hdl.handle.net/1813/9952

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

30. Karran, Daniel J 1976-. The Engineering of Peatland Form and Function by Beaver (Castor spp.).

Degree: 2018, University of Saskatchewan

URL: http://hdl.handle.net/10388/8661

► Northern peatlands are significant contributors to global biogeochemical cycles. In Canada alone, peatlands cover over a tenth of the land surface and store over half… (more)

▼ Northern peatlands are significant contributors to global biogeochemical cycles. In Canada alone, peatlands cover over a tenth of the land surface and store over half of the country’s terrestrial carbon. Their ability to function as a carbon sink is inextricably linked to hydrological conditions defined by an intricate web of feedbacks from numerous autogenic (internal) and allogenic (external) drivers. Research over the last forty years has been focused on understanding the importance of each driver, as such knowledge is necessary to foresee how these landscapes might respond climate change. However, one external driver - the activity of beaver (Castor canadensis in North America and C. fiber in Eurasia) - has received little attention, even though beaver have inhabited northern peatlands for many thousands of years. Identified as a keystone species and ecosystem engineer, beaver can alter the physical, hydrological, and biogeochemical function of landscapes on a scale comparable to that of humans. Thus, the primary goal of this dissertation was to enhance our understanding of how beaver activity alters peatland function and transforms these landscapes over time. To achieve this goal, the associated impacts of beaver activity were studied over numerous scales, mostly in the montane peatlands of Alberta, Canada, via the collection and analyses of field data comprised of different physiographic, hydrological and soil variables. It was found that the activities of beaver have profound impacts on peatland landscapes. Beaver activity changes the physical appearance of peatlands, with the construction of berm-like dams that persist for long periods even after dams breach and/or are abandoned. Peat, excavated from the surrounding area, was a primary dam building material, and dams often extended far beyond the stream channel and inundated large surface areas. Peat excavation added complexity to the pond shape and bathymetry, but despite the physical complexity of beaver ponds, it was found that relationships between quickly measured field attributes allows for reliable estimates of surface water storage in these features. In addition to storing large volumes of surface water, Beaver dams/ponds had significant impacts on hydrological processes in the peatlands studied. Just as in mineral soil environments, beaver ponds acted as sinks for mineral and organic sediments. Furthermore, a multi-year study in a Rocky Mountain fen, showed that the beaver dams connected the peatland to the stream, thereby raising and stabilizing shallow ground water tables within 150-m proximity. Such findings have implications for peat formation in affected areas because plant community and carbon sequestration are tightly linked to water table behavior. Beaver ponds also had significant impacts on underlying soils. Regional sampling of peatland beaver meadows found they were depleted in organic matter. Deeper inspection of this phenomenon through multi-proxy analysis and paleo-reconstruction of peat cores revealed that beaver-meadow soils… Advisors/Committee Members: Westbrook, Cherie J, Bedard-Haughn, Angela K, McDonnell, Jeffrey J, Ferguson, Grant A, de Boer, Dirk, Hackett, Paul.

Subjects/Keywords: beaver; ecohydrology; peatlands; groundwater; surface water; carbon storage; fen

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Karran, D. J. 1. (2018). The Engineering of Peatland Form and Function by Beaver (Castor spp.). (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/8661

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Karran, Daniel J 1976-. “The Engineering of Peatland Form and Function by Beaver (Castor spp.).” 2018. Thesis, University of Saskatchewan. Accessed January 26, 2021. http://hdl.handle.net/10388/8661.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Karran, Daniel J 1976-. “The Engineering of Peatland Form and Function by Beaver (Castor spp.).” 2018. Web. 26 Jan 2021.

Vancouver:

Karran DJ1. The Engineering of Peatland Form and Function by Beaver (Castor spp.). [Internet] [Thesis]. University of Saskatchewan; 2018. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/10388/8661.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Karran DJ1. The Engineering of Peatland Form and Function by Beaver (Castor spp.). [Thesis]. University of Saskatchewan; 2018. Available from: http://hdl.handle.net/10388/8661

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

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